Metrum Pavane NOS DAC

Pity it uses the Analog Devices AD5791 dac as it looks like has it's own I/V stage built into it, leaving no room for I/V experimentation, and there a lot of good work being done in this area by some heavy hitters.

Cheers George

Yeah, my experience with 1bit DSD DAC was... beyond horrible.

6bit R2R Delta Sigma DACs are actually pretty good, Burr-Brown call it "advanced segment", Onkyo receivers/processors got it and it sounds great and is super cheap!

Sabre Delta Sigma DAC sucks, similar to 1bit DACs, sigh.

And finally, fully R2R DACs are heavenly.

Let's see where the DIY Soekris R2R DAC goes, could be awesome sound quality at dirt cheap prices.

I am not totally sure but I think the ad5791 has no internal IV converter. If you make a discrete R2R DAC as MSB and TotalDAC do they both have voltage out without an IV converter. I think the same for this part.

From what I quickly saw on the data sheet of the ad5791 it has voltage outputs, not current, which usually means it has it's own I/V stage built in.

Cheers George

The AD5791 datasheet describes it as providing a voltage output, but one that is unbuffered, and that has a high nominal output impedance of 3.4K. So when used in a DAC component it would almost certainly require a separate buffer stage, and as Ric indicated it is very conceivable that its voltage output is driven directly from the resistor network.

Regards,
-- Al